National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mid Valley Airport (KTXW)

Lat: 26.18°NLon: 97.97°WElev: 70ft.

Fair

69°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 30 Nov 2:55 am CST
Extended Forecast for

Mercedes TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 68. South southeast wind 3 to 6 mph.

    Low: 68 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms. Mostly cloudy, with a temperature rising to near 71 by 9am, then falling to around 58 during the remainder of the day. Light and variable wind becoming north 12 to 17 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 50%.

    High: 71 °F⇓

    Chance
    T-storms then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers after 3am. Cloudy, with a low around 48. North northwest wind 13 to 17 mph, with gusts as high as 26 mph.

    Low: 48 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers before noon. Cloudy, with a high near 57. North northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 57 °F

    Chance
    Showers then
    Cloudy

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight. Cloudy, with a low around 52. North wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 61. North wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55. North wind 5 to 7 mph becoming calm after midnight.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 78. Light and variable wind becoming south southwest 5 to 7 mph in the morning.

    High: 78 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64. Southeast wind 5 to 7 mph.

    Low: 64 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 68. South southeast wind 3 to 6 mph.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a temperature rising to near 71 by 9am, then falling to around 58 during the remainder of the day. Light and variable wind becoming north 12 to 17 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers after 3am. Cloudy, with a low around 48. North northwest wind 13 to 17 mph, with gusts as high as 26 mph.
Monday
A 30 percent chance of showers before noon. Cloudy, with a high near 57. North northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of showers after midnight. Cloudy, with a low around 52. North wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 61. North wind 8 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 55. North wind 5 to 7 mph becoming calm after midnight.
Wednesday
Mostly cloudy, with a high near 78. Light and variable wind becoming south southwest 5 to 7 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 64. Southeast wind 5 to 7 mph.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 79. East wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. North wind 8 to 10 mph.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 72.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 58.
Saturday
Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercedes TX
 26.16°N 97.93°W
Last Update:
3:00 am CST Nov 30, 2025
Forecast Valid:
3am CST Nov 30, 2025-6pm CST Dec 6, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation